package com.shengsiyuan.netty.fifthexample;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;

import java.time.LocalDateTime;

public class TextWebSocketFrameHandler extends SimpleChannelInboundHandler<TextWebSocketFrame> {

    @Override
    protected void channelRead0(ChannelHandlerContext ctx, TextWebSocketFrame msg) throws Exception {

        System.out.println("收到消息：" + msg.text());

        if (msg instanceof TextWebSocketFrame) {

            //ByteBuf con = Unpooled.copiedBuffer("hello world", CharsetUtil.UTF_8);
            //FullHttpResponse res = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK, con);
            //res.headers().set(HttpHeaderNames.CONTENT_TYPE, "text/plain");
            //res.headers().set(HttpHeaderNames.CONTENT_LENGTH, con.readableBytes());

            ctx.channel().writeAndFlush(new TextWebSocketFrame("服务器时间：" + LocalDateTime.now()));

            // ctx.channel().close();
        }
    }

    @Override
    public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
        // 每一个channel都有一个全局唯一的ID
        System.out.println("handlerAdded：" + ctx.channel().id().asLongText());
    }

    @Override
    public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
        System.out.println("handlerRemoved：" + ctx.channel().id().asLongText());
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        System.out.println("一异常发生");
        ctx.close();
    }
}
